Defects in the HSD11 gene encoding 11 β-hydroxysteroid dehydrogenase are not found in patients with apparent mineralocorticoid excess or 11-oxoreductase deficiency

Heli Nikkilä, Grace M. Tannin, Maria I. New, Norman F. Taylor, George Kalaitzoglou, Carl Monder, Perrin C. White

Research output: Contribution to journalArticle

100 Scopus citations


The syndrome of apparent mineralocorticoid excess (AME) is a form of low renin hypertension that is thought to be caused by congenital deficiency of 11 β-hydroxysteroid dehydrogenase (11HSD) activity. This enzyme converts cortisol to cortisone and apparently prevents cortisol from acting as a ligand for the mineralocorticoid (type I) receptor. It also catalyzes the reverse oxoreductase (cortisone to cortisol) reaction. Four patients with AME and the parents of the first patient described (now decreased) were analyzed for mutations in the cloned HSD11 gene encoding an 11HSD enzyme. A patient with suspected cortisone reductase deficiency was also studied. No gross deletions or rearrangements in the HSD11 gene were apparent on hybridizations of blots of genomic DNA. Direct sequencing of polymerase chain reaction-amplified fragments corresponding to the coding sequences, intronexon junctions, and proximal untranslated regions of this gene revealed no mutations. AME may involve mutations in a gene for another enzyme with 11HSD activity or perhaps another cortisol-metabolizing enzyme.

Original languageEnglish (US)
Pages (from-to)687-691
Number of pages5
JournalJournal of Clinical Endocrinology and Metabolism
Issue number3
StatePublished - Sep 1993


ASJC Scopus subject areas

  • Endocrinology, Diabetes and Metabolism
  • Biochemistry
  • Endocrinology
  • Clinical Biochemistry
  • Biochemistry, medical

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